搜尋:pedigree

PassageFourQuestions 26 to 30 are based on the followingpassage.
We all knowthat DNA has the ability to identifyindividuals but, because it is inherited, there are alsoregions of the DNA strandwhich can relate an individual to his or her family (immediate and extended), tribalgroup and even an entirepopulation. MolecularGenealogy (宗谱学) can use thisuniqueidentificationprovided by the geneticmarkers to linkpeopletogetherintofamilytrees. Pedigrees (家谱) based on suchgeneticmarkers can mean a breakthrough for familytreeswhereinformation is incomplete or missing due to adoption, illegitimacy or lack of records. There are manycommunities and populationswhichhavelostpreciousrecords due to tragiceventssuch as the fire in the IrishcourtsduringCivil War in 1921 or Americanslaves for whommanyrecordswereneverkept in the firstplace.
The mainobjective of the MolecularGenealogyResearchGroup is to build a databasecontainingover 100,000 DNA samplesfromindividuals all over the world. Theseindividualswillhaveprovided a pedigreechart of at leastfourgenerations and a smallbloodsample. Once the database has enoughsamples to represent the worldgeneticmake-up, it willeventuallyhelp in solvingmanyissuesregardinggenealogiesthatcould not be done by relyingonly on traditionalwrittenrecords. Theoretically, any individualwillsomeday be able to trace his or her familyoriginsthroughthisdatabase.
In the meantime, as the database is beingcreated, moleculargenealogy can alreadyverifypossible or suspectedrelationshipsbetweenindividuals. “For example, if two men sharing the samelastnamebelievethatthey are related, but no writtenrecordprovesthisrelationship, we can verifythispossibility by collecting a sample of DNA fromboth and looking for commonmarkers (in thiscase we can lookprimarily at the Y chromosome (染色体)),” explains Ugo A. Perego, a member of the BYU MolecularGenealogyresearchteam.【題組】28. The MolecularGenealogyResearchGroup is building a database for the purpose of .
(A) offeringassistance in working out genealogy-relatedproblems(B) solvingmanyissueswithoutrelying on traditionalwrittenrecords(C) providing a pedigreechart of at leastfourgenerations in the world(D) confirming the assumptionthat all individuals are of the sameorigin

26 PassageFourQuestions 26 to 30 are based on the followingpassage.
We all knowthat DNA has the ability to identifyindividuals but, because it is inherited, there are alsoregions of the DNA strandwhich can relate an individual to his or her family (immediate and extended), tribalgroup and even an entirepopulation. MolecularGenealogy (宗谱学) can use thisuniqueidentificationprovided by the geneticmarkers to linkpeopletogetherintofamilytrees. Pedigrees (家谱) based on suchgeneticmarkers can mean a breakthrough for familytreeswhereinformation is incomplete or missing due to adoption, illegitimacy or lack of records. There are manycommunities and populationswhichhavelostpreciousrecords due to tragiceventssuch as the fire in the IrishcourtsduringCivil War in 1921 or Americanslaves for whommanyrecordswereneverkept in the firstplace.
The mainobjective of the MolecularGenealogyResearchGroup is to build a databasecontainingover 100,000 DNA samplesfromindividuals all over the world. Theseindividualswillhaveprovided a pedigreechart of at leastfourgenerations and a smallbloodsample. Once the database has enoughsamples to represent the worldgeneticmake-up, it willeventuallyhelp in solvingmanyissuesregardinggenealogiesthatcould not be done by relyingonly on traditionalwrittenrecords. Theoretically, any individualwillsomeday be able to trace his or her familyoriginsthroughthisdatabase.
In the meantime, as the database is beingcreated, moleculargenealogy can alreadyverifypossible or suspectedrelationshipsbetweenindividuals. “For example, if two men sharing the samelastnamebelievethatthey are related, but no writtenrecordprovesthisrelationship, we can verifythispossibility by collecting a sample of DNA fromboth and looking for commonmarkers (in thiscase we can lookprimarily at the Y chromosome (染色体)),” explains Ugo A. Perego, a member of the BYU MolecularGenealogyresearchteam.
. People in a largearea may possess the same DNA threadbecause .
(A) DNA is characteristic of a region(B) they are beyonddoubt of commonancestry(C) DNA strand has the ability to identifyindividuals(D) theiruniqueidentification can be provided via DNA

28. The MolecularGenealogyResearchGroup is building a database for the purpose of .
(A) offeringassistance in working out genealogy-relatedproblems(B) solvingmanyissueswithoutrelying on traditionalwrittenrecords(C) providing a pedigreechart of at leastfourgenerations in the world(D) confirming the assumptionthat all individuals are of the sameorigin